Pin locked lock strikes

ABSTRACT

A lock strike having a movable pin extending through a hole in the strike. The pin, when fully extended, passes through a hole in the bolt of the associated lock. With the pin passing through the strike and the lock bolt, the bolt is secured in the strike prohibiting opening of the lock. When secured, the lock cannot be opened by a key or by picking or by a simple intrusion tool.

United States Patent Massie Apr. 23, 1974 PIN LOCKED LQCK STRIKES1,253,169 1/1918 0 0115611 292 150 Inventor: Lewis Evans Massie P'Ol o1,126,375 1/1915 Brlnkerhoff 292/150 Solana Beach Cahf' 92075 PrimaryExaminerRichard E. Moore [22] Filed: Dec. 13, 1971 [21] Appl. No.:207,397 [57] ABSTRACT A lock strike having a movable pin extendingthrough 52] US. 01 292/150, 292/341.15, 292/346 3 hole in the Strike TheP when fully extended, 51 1m. 01. E05c 1/16 Passes through a hole ht thebelt of the asseeieted 58 Field of Search 292/150, 346, 341.15 lockwiththe P Passing through the Strike and the lock bolt, the bolt is securedin the strike prohibiting 5 References Cited opening of the lock. Whensecured, the lock cannot UNITED STATES PATENTS be opened by a key or bypicking or by a simple intrus t 1. 880,621 3/1908 Bowers 292/341.15 XIon 00 521,458 6/1894 Burns 4 Clairns, 5 Drawing Figures PATENTEBAPR 2 31974 FIG. IA

FIG. I

FIG.2A

FIG.'2V

INVENTOR.

LEW/5 5. MA 55/5 7 z 714% PIN LOCKED LocK STRIKES This invention relatesto lock strikes which provide a means for retaining the lock latch, orbolt, from being withdrawn from the strike.

The principal object of this invention is to provide a lock strikeincorporating a movable pin which secures the lock latch, or bolt, inthe strike, thus prohibiting movement of the latch or bolt while the pinis engaged in the latch or bolt.

It is also an object of this invention to provide a lock strike whichreinforces the door frame so as to resist overcoming the door lockassembly by force.

The nature of the invention and the principles embodied herein will bebest understood from the following detailed description taken inconnection with the accompanying drawing, which illustrate the performedform of the invention.

In the accompanying drawings:

FIG. 1 is a plan view of the lock strike with the lock pin engaging thelock bolt or catch and FIG. 1A is a sectional view along line AA of FIG.1.

FIG. 2 is a plan view of a modified form of a lock strike and FIG. 2A isa sectional view along line 2A of FIG. 2.

FIG. 3 is an exploded perspective view of the lock strike, the lockbolt, and associated structures of the FIG. 1 and 1A structure.

Referring now to the drawings in which like characters of referencedesignate similar parts in the various views, the numeral 1 designates alock strike which is secured to the door frame by screws 2. A hole, 5,extends from the front edge, 3, of the strike through to the bolt orcatch aperture. A pin, 4, passes through hole 5 and through the bolt orcatch 6 by hole 7. Fig. 1A is a section AA through FIG. 1 and shows thepin 4 extending through the strike 1 and the lock bolt or catch 6. Thestrike should be of metal and of a thickness that provides adequate edgemargin for the hole 5 so that it exits within the bolt cavity and is notaccessible from the outside of the door. Holes in the lock strike shouldbe large enough to accommodate screws long enough to pierce the doorframe trim and enter the door support structure, the stud, or metalframe.

The relationship between the various parts of the strike and the lockbolt, or catch, are further clarified in the exploded perspectivedrawings of FIG. 3.

In FIGS. 2 and 2A is shown a sheet metal lock strike 3 with the pin 4extending through spaced parts of the strike and a portion of the jamb.

The invention is susceptible of various changes in its form,proportions, and minor details of construction, and the right is hereinreserved to make such changes as properly fall within the scope of theappended claims.

Having thus described the invention, what is claimed l. A strike platehaving an opening formed to receive a latch bolt, and alatchbolt-camming portion; spaced strike plate parts, one extending fromadjacent said latchbolt-camming portion, the other extending fromadjacent said opening; said strike plate being mounted on a jamb memberwith a portion of the jamb lying between said parts and said openingproviding latchbolt access to a recess in said jamb member; and a pinassociated with said strike plate and sized to be removably insertedinto opening'means through said strike plate parts and said jamb portionand into said jamb member recess for locking a latch bolt or catch whenengaged through said strike plate.

2. The structure of claim 1 wherein said one strike plate part is formedfrom the material of said latchboltcamming portion.

3. The structure of claim 1 where said other strike plate part extendsinto said jamb recess.

4. The structure of claim 1 in combination with a latch bolt positionedto be extended into said recess and having an aperture structured toreceive said pin to lock said latch bolt in said strike plate.

1. A strike plate having an opening formed to receive a latch bolt, anda latchbolt-camming portion; spaced strike plate parts, one extendingfrom adjacent said latchbolt-camming portion, the other extending fromadjacent said opening; said strike plate being mounted on a jamb memberwith a portion of the jamb lying between said parts and said openingproviding latchbolt access to a recess in said jamb member; and a pinassociated with said strike plate and sizEd to be removably insertedinto opening means through said strike plate parts and said jamb portionand into said jamb member recess for locking a latch bolt or catch whenengaged through said strike plate.
 2. The structure of claim 1 whereinsaid one strike plate part is formed from the material of saidlatchbolt-camming portion.
 3. The structure of claim 1 where said otherstrike plate part extends into said jamb recess.
 4. The structure ofclaim 1 in combination with a latch bolt positioned to be extended intosaid recess and having an aperture structured to receive said pin tolock said latch bolt in said strike plate.